Bolting-sieve cleaner.



No. 754,821. PATENTED MAR. 15, 1904. C. A. SHULTZ. BOLTING.SIEVE CLEANER.

APPLICATION FILED JULY 17, 1903.

no MODEL.

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WITNESSES UN ED ST ES- Patented March 1904. Y

PATENT QFFICE.

BOLTlNG-SIEVE oLeANEn SPECIFICATION forming part of Letters Patent No; 754,821 dated Fletch 1 5 1904;.

Application filed July 17, 1903. Serial No. 165,961- (No model.) I

T0 (117 whom it may concern:

Be it known that I, CHARLES ALnnn SHULTZ, a citizen of the United States. and a resident of Portland. in the county of Multnomah and State of Oregon, have invented a new and Improved Belting-Sieve Cleaner, of

' which the following is a full, clear, and exact description.

This invention relates to means for keeping open the interstices in the tibrous coverings of sieves employed in rotary or other flour sitting or bolting machines by preventing clogging accumulations that interfere with the proper action of the sieves, and has for its object to provide a novel simple traveler-block of peculiar form adapted to be moved freely in all directions over the surface of bolt-ingcloth by the ordinary jar of the working ma; chine, and thus prevent the rcticulations of the fabric from becoming clogged and rem dered defective in service.

The invention consists in the novel construetion and combination of parts, as is hereinafter described, and defined in the appended claim.

Reference is to be had to the accompanying drawings. forming a part of this specification, in which similar characters of reference indi-- cate corresponding parts in both figures.

Figure 1 is a perspective view of the improved sieve-cleani-ng device, and Fig. 2 is a side view of the improved sieve-cleaner applied.

The improved sieve-cleaner may be applied to sieves of modern flour-sifting machines that are disposed and operated in :1 tier occupying parallel horizontal planes or may be applied to a cylindrical flour-bolter, if desired. A representation ot' the device applied for cleaning a horizontally-disposed sieve is given in Fig.

2, showing the relative position of the im-l proved sieve-cleaner when engaged therewith.

The sieve-frame may be rectangular in contour or have any other available form adapted to coact with other details of any preferred style of sitting -machine. As shown, it is formed with an angular side wall a cover 6, and a sieve 7, of any suitable fibrous fabric, such as silk bolting-cloth, woven specially for its service as a sieve-bottom and having proper mesh to suit the grade of flour to be sifted, it being properly stretched and secured onthe lower edge of the frame, as represented in Fig. 2. The improve -sieve-cleanercomprises a block 8, of suitali material, that is shown as having an oblo' g rectangular form and a central oritice Sf therein. This shape may be 'aried from somewhat; but as-good results are alforded by the form shown this is preferred.

Upon the lower surface of the block 8 a plurality of short legs 8" are formed, that atl'ord support to the body of the block, the lower ends of the legs that seat upon the boltingcloth sieve '7 being eonvexly rounded, so that their area of contact with the cloth, as well as frictional resistance to the travel of the block upon the cloth when placed within the sieve- 1 frame, will be reduced to a minimum.

The weight of the block 8 is such that it will be prevented from leaving the cloth, thus insuring the seated engagement of the legs 8 with the cloth 7, while the sieve is agitated for effecting a sifting operation.

, Assuming that flour to be sifted is introduced in the usual way within the frame of the sieve and the latter is agitated to pass the flour down through the interstices of the cloth 7, the block 8, by the jarring motion given to the sieve-frame, will be caused to travel continuously over the sieve-cloth in every direction, preventing the formation of lumps, and by its contact with the cloth on the upper side of the latter will aid in working the flour down through the meshes of the cloth. Furthermore, as the block 8, by means of its legs 8", is prevented from having any considerable degree of frictional contact with the boltingcloth 7 the latter is prevented from injurious wear, such as it is subjected to when brushes are employed to keep the cloth clean.

Having described my invention, I claim as new and desire to secure by Letters Patent- A boltingsieve cleaner, consisting of a block, and a plurality of short legs on a side ot\ the block, having convexly-rounded freeonds, that seat on the stretched sieve-cloth and adapt the block to move over the sieve-cloth.

In testimon whereof I have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES ALBERT SHULTZ.

\Vitnesses: 

